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# Unit 2 Review

Unit 2 Review. Take out pencil &amp; paper You must record all the problems and their solutions. 123,400,567,895,321.892. Which digit is in each place: Ten Millions ____ Hundred Billions ____ Thousands____ Thousandths____. ANSWER: 123,400,567,895,321.892. Which digit is in each place:

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## Unit 2 Review

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### Presentation Transcript

1. Unit 2 Review Take out pencil & paper You must record all the problems and their solutions.

2. 123,400,567,895,321.892 • Which digit is in each place: • Ten Millions ____ • Hundred Billions ____ • Thousands____ • Thousandths____

3. ANSWER:123,400,567,895,321.892 • Which digit is in each place: • Ten Millions __6__ • Hundred Billions __4__ • Thousands__5__ • Thousandths__2__

4. Write as a power of ten • 0.000001 • ANSWER: 10-6

5. Which is greater, 52 or 25? Explain. ANSWER: 5 * 5 = 25 2*2*2*2*2 = 32

6. Divide • 5255/25 ANSWER: 2101 • 5

7. Write as a power of ten • 1 • 100 • ANSWER: 1 = 10 -2 • 10 * 10

8. Write as a power of ten 1 million • ANSWER: 106 • (1,000,000)

9. Multiply • 23.2 * 7.5 ANSWER: 174.00

10. Change to Standard Notation • 8.9 * 107 • ANSWER: 89,000,000

11. Change to Scientific Notation • 118 trillion • ANSWER: 1.18 * 10 14 • (118,000,000,000,000.)

12. Solve 89.5 * .0001 ANSWER: .00895 (89.5 * 10 -4)

13. Solve .56 * 10,000 ANSWER: 5,600. (.56 * 10 4)

14. Write in standard notation. Seven hundred two and seventy-nine thousandths ANSWER: 702.079

15. Change to Scientific Notation • 34,000 • ANSWER: 3.4 * 104

16. How can you check your answer to the following problems: • Addition and Subtraction • Multiplication and Division

17. Subtract • 6.80 – 5.43 ANSWER: 1.37

19. CompareUse >,<, or = • 9 hundredths_ 0.09 • ANSWER: • 9 hundredths = 0.09

20. Write in Words • 0.089 • ANSWER: Eighty-nine thousandths

21. Write in Number-Word Notation • 10,400,000 • ANSWER: 10.4 Million

22. Change to Standard Notation • 5.6 billion • ANSWER: 5,600,000,000

23. CompareUse >,<, or = • 34 ______2.3 * 104 • ANSWER: • 34 < 2.3 * 104

24. Write as a power of ten • 1 hundred billion • ANSWER: 10 11 • (100,000,000,000)

25. Write as a power of ten • 10,000,000,000 • ANSWER: 1010

26. CompareUse >,<, or = • .0001____ .00001 • ANSWER: • .0001> .00001

27. Change to Standard Notation • 5.5 * 10-6 • ANSWER: .0000055

28. Change to Standard Notation • 1.25 * 106 • ANSWER: 1,250,000

29. Change to Scientific Notation • 67,500,000 • ANSWER: 6.75 * 107

30. CompareUse >,<, or = • 5.9 million____5.9 * 106 • ANSWER: • 5.9 million= 5.9 * 106

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